Refinements to the structure of graphite oxide: absolute quantification of functional groups via selective labelling

Nanoscale ◽  
2015 ◽  
Vol 7 (47) ◽  
pp. 20256-20266 ◽  
Author(s):  
Alex Yong Sheng Eng ◽  
Chun Kiang Chua ◽  
Martin Pumera

The various oxygen functional groups in graphite oxide are investigated by synthetic labelling and an electrochemical detection approach.

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74684-74691 ◽  
Author(s):  
Xiao Feng ◽  
Xiaoliang Ma ◽  
Na Li ◽  
Chao Shang ◽  
Xiaoming Yang ◽  
...  

Graphite oxide might be a promising adsorbent for adsorption denitrogenation due to its significant amount of oxygen functional groups.


2021 ◽  
Vol 318 ◽  
pp. 112489
Author(s):  
Saima Kaleem ◽  
Shahid Mehmood ◽  
Madeeha Chaudhry ◽  
Awais Ali ◽  
Muhammad Fahad Bhopal ◽  
...  

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4196
Author(s):  
Ji Hyeon Lee ◽  
Hyun Wook Jung ◽  
In Soo Kim ◽  
Min Park ◽  
Hyung-Seok Kim

In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced to remove the oxygen functional groups present on the CNT surface, and ZnO without catalytic properties was adopted as a coating material to exclude the effect of catalytic reaction. An acid treatment process (H2SO4:HNO3 = 3:1) was conducted to increase the oxygen functional groups of the existing CNTs. Therefore, it was confirmed that ZnO@CNT with reduced oxygen functional groups lowered the charging overpotential by approximately 230 mV and increased the yield of Li2O2, a discharge product, by approximately 13%. Hence, we can conclude that the ZnO@CNT is suitable as a cathode material for Li–O2 batteries.


ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Yongjun Gao ◽  
Pei Tang ◽  
Hu Zhou ◽  
Wei Zhang ◽  
Hanjun Yang ◽  
...  

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